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Open Source and information security mailing list archives
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Date: Sat, 15 Sep 2007 01:44:49 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Jörn Engel <joern@...fs.org> Cc: Nick Piggin <nickpiggin@...oo.com.au>, Christoph Lameter <clameter@....com>, andrea@...e.de, torvalds@...ux-foundation.org, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>, Mel Gorman <mel@...net.ie>, William Lee Irwin III <wli@...omorphy.com>, David Chinner <dgc@....com>, Jens Axboe <jens.axboe@...cle.com>, Badari Pulavarty <pbadari@...il.com>, Maxim Levitsky <maximlevitsky@...il.com>, Fengguang Wu <fengguang.wu@...il.com>, swin wang <wangswin@...il.com>, totty.lu@...il.com, hugh@...itas.com Subject: Re: [00/41] Large Blocksize Support V7 (adds memmap support) On Tue, 11 Sep 2007 14:12:26 +0200 Jörn Engel <joern@...fs.org> wrote: > While I agree with your concern, those numbers are quite silly. The > chances of 99.8% of pages being free and the remaining 0.2% being > perfectly spread across all 2MB large_pages are lower than those of SHA1 > creating a collision. Actually it'd be pretty easy to craft an application which allocates seven pages for pagecache, then one for <something>, then seven for pagecache, then one for <something>, etc. I've had test apps which do that sort of thing accidentally. The result wasn't pretty. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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